Great until the 'interconnected grid' fails. Interesting world with no phone, no email, no scheduling, etc. Paradoxically the more interconnected we become the more vulnerable we are to catastrophic failure.

the kind of "conversation" that all those things, devices and human beings will be entering into makes me think of google wave and XMPP protocol straight away as a possible basis on which such conversations could happen from a technical perspective. too bad google sent out a negative signal for this initiative by abandoning their wave client. i really hope the concept will fall into good ground somewhere else!